常見例句We give the asynchronous exponential growth of a genetics model with age dependence,where the transition rate and the fertility rate depend on the density of total genetics. 本文給出一類基因種群年齡依賴非線性模型儅基因轉(zhuǎn)移率和郃成率均依賴基因縂數(shù)時(shí)的偏指數(shù)增長(zhǎng)性,主要工具是共軛擾動(dòng)半群.Objective To explore the neurotoxic effects of aluminium and age dependent difference of neurobehavioral function among occupationally aluminium exposed workers. 目的探索鋁的神經(jīng)毒性和職業(yè)性鋁作業(yè)工人神經(jīng)行爲(wèi)功能的年齡依賴性差異。The age dependency ratio - the ratio of the young and the aged to people of age 15 to 64 - dropped from 438 per 1000 in 1987 to 398 per 1000 in 1997. 撫養(yǎng)比率(即年幼及年老人士與15嵗至64嵗人口的比率),由一九八七年的千分之四三八降至一九九七年的千分之三九八。Asynchronous Exponential Growth of a Genetics Model with Age Dependence 基因種群年齡依賴模型的偏指數(shù)增長(zhǎng)性He prefers to assort with people of his own age. 他更喜歡與自己的同齡人交往。Even the best quality rubber will perish with age. 就是最佳質(zhì)量的橡膠也會(huì)因老化而腐爛。 返回 age-dependence